help

[civicracer5000]

I have several codes in my ecu they are:

-p1508
-p0420
-p0505
-p1457

p1508 is the IACV I already replace that and reset the ecu but the light keeps coming back with the same codes anything else that could be causing all this codes
Thanx in advance for the help.

[SLow_POke]

i know you said you repace it but it sounds like the IACv. did you check the wiring ? if you have the proper apecs you should be able to see if its in yoru wiring or ecu. vaccum leak(major)?

also its trhowing a o2 code
its been over a year since i even tried to mess with emmision code but
i think its the o2 after the cat thats might be throwinf the p0420
doesnt mean you have a BAD CAT but you casnt rule outt hat possebility

[civicracer5000]

I did check the wiring for any open circuits but its fine and the p0420 code is a catalyst system efficiency below threshold